Shu Guang
Shu Guang
Potential Transformer (PT) Fuses are indispensable components in modern power distribution. As global energy demand shifts toward renewable integration—wind and solar farms—the need for precise, high-voltage instrument protection has reached an all-time high. PT fuses prevent catastrophic damage to monitoring equipment, ensuring continuous grid stability across industrial substations and urban infrastructure.
International procurement teams are increasingly looking toward China-based manufacturing for Custom Potential Transformer Fuses. The primary drivers are no longer just cost, but the ability to provide highly customized, IEC-compliant solutions with rapid turnaround times. Global enterprises require suppliers who can adapt to local voltage standards, such as 12kV, 24kV, and 36kV, while maintaining extreme reliability in harsh environmental conditions.
The industry is moving toward "Smart-Protection." Modern PT fuses are now designed with better thermal management and environmental sealing. As a specialized factory, we are at the forefront of this evolution, developing current-limiting fuses that minimize let-through energy to protect sensitive electronic measurement devices in smart grid environments.
Established in 1992, Wenzhou Shuguang Fuse Co., Ltd. (formerly Yueqing Shuguang Fuse Factory) is located in Yueqing, Zhejiang—the Electrical Capital of China. We have grown into a titan of power technology, integrating R&D, production, and professional service.
Our commitment to E-E-A-T principles is evidenced by our status as a designated manufacturer for the Ministry of Electric Power Industry. We don't just produce fuses; we engineer safety systems that meet rigorous international standards, including IEC60282, DIN43625, and ANSI C37.42.
Contact Our Technical TeamOur manufacturing process is backed by the most stringent testing facilities in the world, including the Electric Power Research Institute and the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center.
Our Potential Transformer Fuses meet: ANSIC37,42, DIN43625, BS2692, IEC282-2, IEC60644, IEC60470, IEC60282-1, IEC269-2, and GB15166.1/2/5. This global compatibility ensures that our products can be seamlessly integrated into projects across Europe, the Middle East, and Southeast Asia.
No two electrical systems are identical. We provide bespoke OEM/ODM services, allowing for custom dimensions, varying current-time characteristics, and specific mounting requirements. Whether it's a miniature 10kV fuse or a specialized oil-immersed link, our engineering team delivers.
Our products, branded under the highly reputable "Shu Rong" name, are utilized in diverse environments globally:
Protecting potential transformers from short circuits and ensuring accurate voltage monitoring for grid control centers.
Safe electrical distribution in mining, steel mills, and chemical plants where high-voltage stability is paramount.
Critical protection for wind turbine transformers and solar inverter stations, handling fluctuating loads with precision.
Our factory utilizes high-precision automated winding machines and sophisticated testing equipment to ensure every "Shu Rong" fuse performs within tolerance. High-quality raw materials are our backbone.
Located in Yueqing, we have immediate access to the world's most robust electrical supply chain, allowing us to source premium silver, copper, and specialized ceramic materials efficiently.
We adhere to the principle: "Development by science and technology, and survival by quality." We have built a complete sales network across China and established solid trade relations with partners in Africa and Europe.
"Technological precision and high-quality raw materials are the backing of our quality assurance system."
